You can raise a modification – or mod – when you want to propose a change to any part of the CUSC.

For more information, please contact [email protected]

Search for any current or concluded modifications by name or ID. You can sort mods by ID, name, status or date of update.

Views reference
Modification status
ID Name Status Last Updated Sort ascending
CMP286 CMP286 Improving TNUoS Predictability Through Increased Notice of the Target Revenue used in the TNUoS Tariff Setting Process. Current
CMP431 CMP431:Adjustments to TNUoS Charging from 2025 to support the Market Half Hourly Settlement (MHHS) Programme (Non-Charging) Current
CMP434 CMP434 Implementing Connections Reform Current
CMP430 CMP430: Adjustments to TNUoS Charging from 2025 to support the Market Wide Half Hourly Settlement (MHHS) Programme Current
CMP420 CMP420: Treatment of BSUoS Revenue Recovery, and creation of a BSUoS Fund Current
CMP328 CMP328: Connections Triggering Distribution Impact Assessment Current
CMP435 CMP435 Application of Gate 2 Criteria to existing contracted background Current
CMP426 CMP426: TNUoS charges for transmission circuits identified for the HND as onshore transmission Current
CMP392 CMP392: Transparency and legal certainty as to the calculation of TNUoS in conformance with the Limiting Regulation Current
CMP424 CMP424: Amendments to Scaling Factors used for Year Round TNUoS Charges Current

More about modifications

Modification Tracker

Our Tracker gives you the latest details on current code modifications including the purpose and the stakeholders it affects, as well as panel comments and where it is in the review process. It is published on the 7th (or next working day) of each month.

Modification Proposal Form

If you're thinking about raising a modification, please get in touch with us. Our experts can give you advice on your Proposal, explain how the modification process works and help to answer any questions you may have. When we receive your Proposal, we'll check it through and work together to make sure it's easy to understand.

Calendar

Once you've been in touch and are ready to write your Proposal paper, send it to us by the monthly modification submission date which you can find on our Calendar.